DOR (Diminished Ovarian Reserve)
The concept of “Diminished Ovarian Reserve (DOR)” refers to the reduction in the number and quality of eggs that maintain fertility potential in a woman’s ovaries. This is a crucial evaluation criterion for women planning pregnancy. One of the most reliable indicators used to determine ovarian reserve is the AMH (Anti-Müllerian Hormone) level. Although DOR is typically seen in women over the age of 35, it can also occur at younger ages due to genetic factors, environmental influences, or past surgeries. Early diagnosis, proper monitoring, and appropriate treatment planning can manage this condition.
What is Diminished Ovarian Reserve (DOR)?
Diminished ovarian reserve is a condition where the ovaries’ capacity to produce eggs decreases. A woman is born with a certain number of eggs, and this number naturally declines with age. However, in some women, this decline may occur earlier or faster than expected. DOR can affect both the chances of natural pregnancy and the success of assisted reproductive treatments. The AMH test is one of the most important laboratory parameters for early diagnosis of this condition. A low AMH level indicates a reduced ovarian reserve.
How is Diminished Ovarian Reserve (DOR) Evaluated?
Three main tests are used to evaluate ovarian reserve: AMH (Anti-Müllerian Hormone) level, ultrasound-based antral follicle count (AFC), and FSH (Follicle Stimulating Hormone) level. The AMH test can be performed on any day of the menstrual cycle and accurately reflects the current egg pool in the ovaries. A low AMH value indicates low egg reserve. Additionally, the antral follicle count is determined by counting the small follicles in both ovaries via ultrasound. When these values are evaluated together, the diagnosis of DOR becomes clear.
What is AMH (Anti-Müllerian Hormone)?
AMH is a hormone secreted by small follicles in the ovaries. It is considered a biochemical indicator of female fertility. The AMH level is a direct reflection of ovarian reserve. A value below 1 ng/mL generally suggests diminished ovarian reserve. The AMH level decreases with age, but in some women, this decline may occur earlier than expected. The AMH test is a guiding parameter in infertility evaluations, IVF planning, and menopause prediction.
Symptoms of Diminished Ovarian Reserve
DOR usually does not start with noticeable symptoms. However, shortening of the menstrual cycle (e.g., from 28 days to 24 days), decreased menstrual volume, or early menopause symptoms may occur. Long-term inability to conceive is also an important indicator. Therefore, regular monitoring with AMH testing and ovarian ultrasound is recommended for women planning pregnancy.
Causes of Diminished Ovarian Reserve
Causes of DOR include aging, genetic predisposition, autoimmune diseases, ovarian surgeries, treatments like chemotherapy-radiotherapy, smoking, and environmental toxins. Additionally, endometriosis and chronic ovarian infections can damage ovarian tissue. In some cases, the cause cannot be determined, and this condition is termed “idiopathic diminished ovarian reserve.”
Treatment of Diminished Ovarian Reserve
DOR is not a completely reversible condition, but the chance of pregnancy can be increased with the right treatment. The treatment plan is personalized. Medications that stimulate ovulation, insemination, or in vitro fertilization (IVF) methods can be used. During the treatment process, AMH levels and ovarian response are monitored. In some cases, egg retrieval procedures are combined with freezing strategies to preserve future pregnancy chances.
Relationship Between AMH and Age
The AMH level naturally decreases with age. The average value of around 2–3 ng/mL at age 30 can fall below 1 ng/mL around age 40. However, this decline varies from person to person. Some young women may have low AMH values due to genetic or environmental reasons. Therefore, not only age but also the AMH level and antral follicle count should be evaluated together.
Lifestyle and Supportive Treatments in Diminished Ovarian Reserve
Lifestyle adjustments are important for women diagnosed with DOR. Healthy eating, regular sleep, stress management, and quitting smoking and alcohol contribute positively to egg quality. In some cases, coenzyme Q10, vitamin D, and antioxidant supplements may be recommended as supportive measures. However, these supplements should always be used under medical supervision. 🤰🌿
| Parameter | Normal Range | Seen in Diminished Ovarian Reserve |
|---|---|---|
| AMH Level | 1.0 – 4.0 ng/mL | < 1.0 ng/mL |
| FSH Level | < 10 IU/L | > 10 IU/L |
| Antral Follicle Count | 8–12 | < 5 |
| Age Factor | Under 30 years | 35 years and above at risk |
Prices for Diminished Ovarian Reserve (DOR)
The prices for DOR and AMH tests vary depending on the test kits used, laboratory conditions, and additional examination requirements. For current price information and personal evaluation, please contact our clinic. Each patient’s fertility status is analyzed individually, and an appropriate test combination is planned.
In conclusion, Diminished Ovarian Reserve (DOR) is a manageable condition when diagnosed early. Thanks to the AMH test, ovarian capacity is accurately assessed, and a personalized treatment plan is made. The goal is to achieve a healthy pregnancy by making the best use of the existing egg potential. 🌸
Frequently Asked Questions About Diminished Ovarian Reserve (DOR)
Question: What is the best time for an AMH test?
💡 The AMH test can be performed on any day of the menstrual cycle. Values do not change during the day or with menstruation.
Question: Does a low AMH value completely prevent pregnancy?
📌 No, but the chance of pregnancy decreases. Pregnancy is possible with early diagnosis and appropriate treatment.
Question: What methods are preferred in DOR treatment?
✅ Medications that stimulate ovulation, insemination, or IVF treatments can be applied. The choice is made based on age, AMH level, and ovarian response.
Question: How can the AMH value be increased?
A diet plan, quitting smoking, antioxidant supplements, and stress control can support egg quality; however, a significant increase in the AMH value is generally not possible.
